PBO compiler patch problem

[yyghp]

I am going to install oracle 10g, which requires to have such patch installed first:
PHSS_26793 S700-800 11.X +O4/PBO Compiler B.11.11.04 cumulative patch

But when I tried to load this patch, I couldn't pass the Analysis phase:

The patch fileset "PHSS_26793.LANG-AUX,r=1.0" may only be installed upon a previously installed base fileset. The specification for this base fileset is "Auxiliary-Opt.LANG-AUX,fr=B.11.11.04,v=HP". Since there is no fileset on the target or selected from the source which matches this specification, fileset "PHSS_26793.LANG-AUX,r=1.0" will be excluded.

so, where can i get that fileset ?
Thanks!

[yyghp]

up...